Source : Webster's Revised Unabridged Dictionary (1913)

Dorking fowl \Dor"king fowl`\ [From the town of Dorking in
   England.] (Zo["o]l.)
   One of a breed of large-bodied domestic fowls, having five
   toes, or the hind toe double. There are several strains, as
   the white, gray, and silver-gray. They are highly esteemed
   for the table.